大型油田注水系统节能降耗与运行方案优化  

Optimization of energy saving and operation plan for large scale oilfield injection system

作　　者：刘扬[1] 袁振中[1] 魏立新[1] 

机构地区：[1]大庆石油学院提高油气采收率教育部重点实验室,黑龙江大庆163318

出　　处：《大庆石油学院学报》2006年第3期43-46,共4页Journal of Daqing Petroleum Institute

基　　金：黑龙江省自然科学基金资助项目(E2004-19);中国石油天然气股份有限公司科技风险创新基金资助项目(油科函字2004-32)

摘　　要：油田注水系统注水效率较低、能耗较高.以注水能耗最小为目标函数,水力平衡约束、注水量约束、注水压力约束等为条件,建立了油田注水系统运行方案优化数学模型.该模型属于带有离散变量和连续变量的混合优化设计问题,根据模型的结构和特点,将遗传算法、模拟退火算法和分层优化法结合,形成了混合遗传模拟退火算法的求解策略;染色体采用0-1编码,在操作过程中采用了改进的自适应交叉和变异方式,并实施了最优保留策略.现场应用结果表明,注水单耗下降0.32 kW.h/m3,节约耗电量为2.32×104kW.h/d.In oilfield injection system,the system efficiency is low and energy consumption is high.With the minimum of injection energy consumption as the objective function,the hydraulic equilibrium,injection rate and injection pressure as the constrained conditions,an operation plan optimization mathematic model for oilfield injection system is constructed.The model is a hybrid optimization design with disperse and continuous variables.According to its characteristics,a solving method for hybrid genetic simulated annealing algorithm which combines GA,SA and separated optimization is worked out.0-1 coding for chromosome,improved adaptive intercross and variation mode in operation and optimized reservation strategy are adopted.The application in an injection system indicates that the injection unit loss drops by 0.32 kW·h·m^(-3),and electricity power is saved by 2.32×10~4 kW·h·d^(-1).

关 键 词：油田 注水系统 节能 混合优化 模型 遗传算法 模拟退火算法 分层优化法 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]